<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      function maxarry(arr = []) {
        // console.log(arr);
        if (arr.length <= 1) return arr[0]
        let max = []
        for (let i = 0; i < arr.length; i++) {
          let Arrsum = []
          let sum = 0
          for (let j = i; j < arr.length; j++) {
            Arrsum.push(sum += arr[j])
          }
          max.push(Math.max(...Arrsum))
        }
        console.log(Math.max(...max))
      }
      const nums = [-2, 1, 4, 6, -4]
      const res =maxarry(nums)
    </script>
  </body>
</html>
